"smear" Leadsom, The Times released an audio recording. Her comments were widely criticised with fellow Conservative MPs including Sarah Wollaston and Anna Soubry suggesting the remarks showed she lacked the judgement to be Prime Minister and calling upon her to withdraw. Alan Duncan described her remarks as "vile". Tim Loughton, Leadsom's campaign manager for the leadership contest, said that the establishment were ganging up on her. Questions over financial affairs She promised to publish her tax returns when she made it to the final ballot of the leadership election. Three days later she published "one year of tax information after rival Theresa May released four years' worth of tax returns". Richard Murphy, director of Tax Research UK, a tax campaign group, said "This isn't her tax return, it's a tax computation...It's a summary of numerical information but not an explanation of where it came from or what tax is due. It excludes all the information that might be of interest, so she has not published her tax return.” "Black ops" allegation Former conservative leader Iain Duncan Smith alleged that the intensity and nature of the sniping at Leadsom revealed ulterior motives, unconnected to her fitness for the post, saying to journalist Robert Peston that they indicated "a kind of real 'black-ops' operation to denigrate her reputation", writing later it constituted a "concerted and brutal attempt to destroy her character". Allison Pearson in The Sunday Telegraph wrote, "I have no doubt whatsoever that Leadsom became the target of a brutal and sustained character assassination." The next day she wrote, "Andrea Leadsom has nothing to be ashamed of: her conscience is clear. Those who sought to destroy her should examine theirs, if they can find it." Norman Tebbit described the efforts to remove her candidature as an intense smear campaign, saying that he suspected they may have arisen from her opposition to gay marriage as much as her Euroscepticism. Withdrawal On 11 July 2016 Leadsom withdrew from the Conservative leadership election, stating that she did not have enough support for her cause, with only a quarter of the votes from the parliamentary party. The previous day The Sunday Times had reported a rumour that up to 20 Tory MPs would quit the party if Leadsom won the leadership contest; this was later supported by reports in other news media but "denied by MPs" according to The Guardian. In her statement Leadsom said: